For more than 200 years, a disturbingly vicious thread has run through Western history, based on biology and justifying cruelty on an almost unimaginable scale. It centres on the question of how to control human population growth and it answers that question by saying we must be cruel to be kind, that ends justify means. It is still around today; and it could not be more wrong. It is the continuing misuse of Malthus.
According to his epitaph in Bath Abbey, the Rev Thomas Robert Malthus, author of An Essay on the Principle of Population (1798), was noted for “his sweetness of temper, urbanity of manners and tenderness of heart, his benevolence and his piety”. Yet his ideas have justified some of the greatest crimes in history. By saying that, if people could not be persuaded to delay marriage, we would have to encourage famine and “reprobate specific remedies for ravaging diseases”, he inadvertently gave birth to a series of heartless policies — the poor laws, the British government’s approach to famine in Ireland and India, social Darwinism, eugenics, the Holocaust, India’s forced sterilisations and China’s one-child policy. All derived their logic more or less directly from a partial reading of Malthus.